DK0722934T3 - Process for preparing 2-chloro-pyridines substituted at the 5-position - Google Patents

Process for preparing 2-chloro-pyridines substituted at the 5-position

Info

Publication number
DK0722934T3
DK0722934T3 DK96100158T DK96100158T DK0722934T3 DK 0722934 T3 DK0722934 T3 DK 0722934T3 DK 96100158 T DK96100158 T DK 96100158T DK 96100158 T DK96100158 T DK 96100158T DK 0722934 T3 DK0722934 T3 DK 0722934T3
Authority
DK
Denmark
Prior art keywords
alkyl
chloro
preparing
formula
pyridines substituted
Prior art date
Application number
DK96100158T
Other languages
Danish (da)
Inventor
Reinhard Dr Lantzsch
Klaus Dr Jelig
Hans Dr Lindel
Christoph Mannheims
Walter Dr Merz
Original Assignee
Bayer Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bayer Ag filed Critical Bayer Ag
Application granted granted Critical
Publication of DK0722934T3 publication Critical patent/DK0722934T3/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
    • C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
    • C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D213/61—Halogen atoms or nitro radicals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pyridine Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

Prepn. of 5-substd. 2-chloropyridines of formula (I) comprises (1) reacting acetenamides of formula (II) with Vilsmeier reagent (III), which is prepd. by reacting formamides of formula (IV) with a chlorinating agent (V); and (2) removing excess (V) after reaction by distn. or addn. of dialkylformamide: R = opt. substd. (ar)alkyl; R1 = 1-4C alkyl or aryl-(1-4C)-alkyl; R2,R3 = linear, branched or cyclic 4-8C alkyl.
DK96100158T 1995-01-19 1996-01-08 Process for preparing 2-chloro-pyridines substituted at the 5-position DK0722934T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19501478A DE19501478A1 (en) 1995-01-19 1995-01-19 Process for the preparation of 2-chloropyridines substituted in the 5-position

Publications (1)

Publication Number Publication Date
DK0722934T3 true DK0722934T3 (en) 2000-12-18

Family

ID=7751826

Family Applications (1)

Application Number Title Priority Date Filing Date
DK96100158T DK0722934T3 (en) 1995-01-19 1996-01-08 Process for preparing 2-chloro-pyridines substituted at the 5-position

Country Status (18)

Country Link
US (1) US5648495A (en)
EP (1) EP0722934B1 (en)
JP (1) JP4502225B2 (en)
KR (1) KR100362229B1 (en)
CN (1) CN1090182C (en)
AT (1) ATE197293T1 (en)
AU (1) AU702997B2 (en)
BR (1) BR9600151A (en)
CA (1) CA2167351A1 (en)
CZ (1) CZ291402B6 (en)
DE (2) DE19501478A1 (en)
DK (1) DK0722934T3 (en)
ES (1) ES2151087T3 (en)
HU (1) HU216268B (en)
IL (1) IL116768A (en)
RU (1) RU2154060C2 (en)
TW (1) TW426670B (en)
ZA (1) ZA96396B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19539074C2 (en) * 1995-10-20 1998-07-30 Bayer Ag Process for the preparation of 2-chloropyridines substituted in the 5-position
US5892050A (en) * 1998-01-28 1999-04-06 American Cyanamid Company Process for the preparation of pyridine dicarboxylate derivatives
CN102285913A (en) * 2010-06-18 2011-12-21 北京英力精化技术发展有限公司 Synthesis method of CMP (2-chloro-5-methylpyridine)
EP2816031A1 (en) * 2013-06-18 2014-12-24 Saltigo GmbH Method for manufacturing 2,3-Dichloropyridine
CN113185455B (en) * 2020-01-14 2022-11-22 新发药业有限公司 Preparation method of 2-hydroxy-6-trifluoromethylpyridine
CN113402452B (en) * 2021-07-29 2022-08-02 上海垚翀化工科技有限公司 Method for preparing 2-chloro-5-substituted pyridine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4504664A (en) * 1983-05-20 1985-03-12 Ici Americas Inc. 2-Piperidones
DE4020052A1 (en) * 1990-06-23 1992-01-02 Bayer Ag METHOD FOR PRODUCING 2-CHLORINE-5-METHYL-PYRIDINE
DE4039750A1 (en) * 1990-12-13 1992-06-17 Basf Ag METHOD FOR REMOVING PHOSGEN FROM EXHAUST GAS
DE4217021A1 (en) * 1991-12-13 1993-06-17 Bayer Ag METHOD FOR PRODUCING 5-SUBSTITUTED 2-CHLORINE PYRIDINES
DE4234637A1 (en) * 1992-10-14 1994-04-21 Bayer Ag Process for the preparation of 2-substituted 5-alkyl-pyridines

Also Published As

Publication number Publication date
HUP9600097A3 (en) 1997-08-28
BR9600151A (en) 1998-01-06
HU9600097D0 (en) 1996-03-28
HU216268B (en) 1999-05-28
IL116768A (en) 1999-11-30
CZ16596A3 (en) 1996-08-14
KR960029324A (en) 1996-08-17
DE19501478A1 (en) 1996-07-25
CN1090182C (en) 2002-09-04
AU4097896A (en) 1996-07-25
CZ291402B6 (en) 2003-03-12
CA2167351A1 (en) 1996-07-20
CN1134416A (en) 1996-10-30
ZA96396B (en) 1996-08-15
DE59606061D1 (en) 2000-12-07
IL116768A0 (en) 1996-05-14
ES2151087T3 (en) 2000-12-16
JPH08259538A (en) 1996-10-08
HUP9600097A2 (en) 1997-04-28
RU2154060C2 (en) 2000-08-10
JP4502225B2 (en) 2010-07-14
AU702997B2 (en) 1999-03-11
KR100362229B1 (en) 2003-04-16
EP0722934B1 (en) 2000-11-02
US5648495A (en) 1997-07-15
EP0722934A1 (en) 1996-07-24
ATE197293T1 (en) 2000-11-15
TW426670B (en) 2001-03-21

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